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Finding the Fourth Proportional to 390,002.96, 584,575.08 and 255,011.37

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Solution

The fourth proportional to 390,002.96, 584,575.08 and 255,011.37 is: 382,236.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,002.96 : 584,575.08 = 255,011.37 : x
  2. Step 2: Convert to fraction form
    390,002.96/584,575.08 = 255,011.37/x
  3. Step 3: Cross multiply
    390,002.96x = 584,575.08 × 255,011.37
  4. Step 4: Simplify right side
    390,002.96x = 149,073,292,018.66
  5. Step 5: Solve for x
    x = 149,073,292,018.66/390,002.96
  6. Step 6: Final answer
    x = 382,236.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.